Have you watched superhero movies like Spider-Man: Into the Spider-Verse or Avengers: Endgame , where characters from different universes and timelines come together to fight a common villain? What if we told you that, in the real world, something even crazier might be happening all the time, right under our noses? Imagine shrinking down to the size of an atom. What you would see would not be like our everyday world at all! This is the realm of quantum physics, where the rules we are familiar with do not apply, where things exist everywhere and nowhere at once. In the quantum world, the moment you observe something, it starts behaving differently. In this article, we will explore two of the many possible explanations for such phenomena. We will try to answer the question of whether there are many copies of you roaming around in different universes, and why you have not met one.
Have you watched superhero movies like Spider-Man: Into the Spider-Verse or Avengers: Endgame , where characters from different universes and timelines come together to fight a common villain? What if we told you that, in the real world, something even crazier might be happening all the time, right under our noses? Imagine shrinking down to the size of an atom. What you would see would not be like our everyday world at all! This is the realm of quantum physics, where the rules we are familiar with do not apply, where things exist everywhere and nowhere at once. In the quantum world, the moment you observe something, it starts behaving differently. In this article, we will explore two of the many possible explanations for such phenomena. We will try to answer the question of whether there are many copies of you roaming around in different universes, and why you have not met one.
Have you ever watched superhero movies like Spider-Man: Into the Spider-Verse? Or played games where your choices create different outcomes? What if we told you that in the real world, something even crazier might be happening all the time, right under our noses? Imagine shrinking down to the size of an atom. What you'd see wouldn't be like our everyday world at all! This is the realm of quantum physics, where the rules we know do not apply, where things exist everywhere and nowhere at once. The moment you observe something, it starts behaving differently. In this article, we will explore two of the many possible explanations for such phenomena, namely the Copenhagen interpretation and the many-worlds interpretation of quantum physics. We will also try to answer the question of whether there are many copies of you roaming around in different universes, and why you haven't met one.
Along with weaving together observations, experiments, and theoretical constructs into a coherent mesh of understanding of the world around us, physics over its past five centuries has continuously refined the base concepts on which the whole framework is built. In quantum physics, first in non-relativistic mechanics and later in quantum field theories, even familiar concepts of position, momentum, wave or particle, are derived constructs from the classical limit in which we live but not intrinsic to the underlying physics. Most crucially, the very idea of the individual, whether an object or an event, distinguished only in a mere label of identity from others identical to it in all the physics, exists only as an approximation, not an element of underlying reality. Failure to recognize this and seeking alternative explanations in many worlds or multiverses leads only to incoherent logic and incorrect physics. As an example, in a physical system such as an atom in a particular state, physics deals with the universal system of all such atoms but makes no meaningful prediction of the position of an electron or the time of decay of any specific atom. Those are incidental, entirely random among all possible positions and times, even while physics makes very precise predictions for the distribution of the outcomes in measurements on atoms in that state. Physics deals with the universal, not the individual.
Along with weaving together observations, experiments, and theoretical constructs into a coherent mesh of understanding of the world around us, physics over its past five centuries has continuously refined the base concepts on which the whole framework is built. In quantum physics, first in nonrelativistic mechanics and later in quantum field theories, even familiar concepts of position, momentum, wave, or particle, are derived constructs from the classical limit in which we live but not intrinsic to the underlying physics. Most crucially, the very idea of the individual, whether an object or an event, distinguished only in a mere label of identity from others identical to it in all the physics, exists only as an approximation, not an element of underlying reality. It is not an element of physics. Failure to recognize this and seeking alternative explanations in many worlds or multiverses leads only to incoherent logic and incorrect physics. As an example, for an atom in a particular state, physics deals with the universal system of all such atoms but makes no meaningful prediction of the position of an electron or the time of decay of any specific atom. Those are incidental, entirely random among all possible positions and times, even while physics makes very precise predictions for the distribution of the outcomes in measurements on atoms in that state. Physics deals with the universal, not the individual.
In classical physics there is, in accordance with common sense, an objective world ‘out there’. That world evolves in a clear and deterministic way, being governed by precisely formulated mathematical equations. This is as true for the theories of Maxwell and Einstein as it is for the original Newtonian scheme. Physical reality is taken to exist independently of ourselves; and exactly how the classical world ‘is’ is not affected by how we might choose to look at it. Moreover, our bodies and our brains are themselves to be part of that world. They, also, are viewed as evolving according to the same precise and deterministic classical equations. All our actions are to be fixed by these equations - no matter how we might feel that our conscious wills may be influencing how we behave. Such a picture appears to lie at the background of most serious 1 philosophical arguments concerned with the nature of reality, of our conscious perceptions, and of our apparent free will. Some people might have an uncomfortable feeling that there should also be a role for quantum theory - that fundamental but disturbing scheme of things which, in the first quarter of this century, arose out of observations of subtle discrepancies between the actual behaviour of the world and the descriptions of classical physics. To many, the term ‘quantum theory’ evokes merely some vague concept of an ‘uncertainty principle’, which, at the level of particles, atoms or molecules, forbids precision in our descriptions and yields merely probabilistic behaviour. Actually, quantum descriptions are very precise, as we shall see, although radically different from the familiar classical ones. Moreover, we shall find, despite a common view to the contrary, that probabilities do not arise at the minute quantum level of particles, atoms, or molecules - those evolve deterministically - but, seemingly, via some mysterious larger-scale action connected with the emergence of a classical world that we can consciously perceive. We must try to understand this, and how quantum theory forces us to change our view of physical reality.
Abstract The focus of this chapter is to define and introduce the concept of the many-worlds theory within quantum mechanics. Using video clips from three decades of live-action Spider-Man films throughout the Marvel cinematic universe, this lesson challenges the students to recognize the illustration of the many-worlds theory and its relationship to the linear nature of time, continuity, and change. Students will use the multi-generational depictions of the character of Spider-Man as a case study to explore the intersection of the theories of quantum mechanics and quantum entanglement, using scenes from the Spider-Verse narrative. Students will also engage in activities exploring probabilities and the likelihood of their outcome.